Filter



.1. BROWN FILTER Filed March 12, 1934 .v ro 8 7.

2 www 5mm Patented Oct. 15, 1935 FILTER Jerome Brown,A Milwaukee, Wis.,assignor to Briggs & Stratton Corporation, Milwaukee, Wis., acorporation of Delaware Application March 12, 1934, Serial No. I715,131

2 Claims.

. This invention relates to new and useful improvements in filters andrefers more particularly to oil filters forV use with internalcombustion engines of automotive vehicles, of the type shown anddescribed in Patent No. 1,934,251,

issued to H. D. Austin, November '7, 1933, and

has as an object to provide a filter of compact construction, andincreased capacity.

More speciiically, it is an object of this invention to provide a filterhaving two lter units disposed in parallel with means whereby thelubricant to be filtered passes simultaneously through both units vtothus increase the capacity of the filter without materially increasingthe 15 `overall size of the device and Without in anywise complicatingits design.

With the above and other objects in view which will appear as thedescription proceeds, my invention resides in the novel construction,combination and arrangement of parts substantially as hereinafterdescribed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of thehereindisclosed invention may be made as come within the scope of theclaims.

In the accompanying drawing, I have illustrated one complete example ofthe physical embodiment of my invention constructed according to thebest mode I have so far devised for the 30 practical application of theprinciples thereof,

and in which:

The single view is a view partly in side elevation and partly invertical section taken through a filter device embodying this invention.

35 Referring now more particularly to the accompanying drawing, in whichlike numerals indicate like parts, the numeral 5 designates the casingof the filter device, which in the present instance, consists of upperand lower cup-shaped 40 units 6 and 1 arranged end to end, with theirmeeting edges secured together as at 8.

Disposed within the upper and lower casing sections 6 and 'I are lterunits 9 and I 0, respectively. These filter units are identical in 45construction and comprise batches of loosely carded animal wool confinedbetween inner screens I I and outer screens I2. The screens II and I2serve to maintain the batches of wool which comprise the lter unitsseparate from 50 eachother to define a central space or chamber I3, andspaced from the casing top and bottom walls I4 and I5 respectively todefine upper and lower spaces or chambers I6 and I'I respectively.

v To conduct the liquid to .be ltered to the cen- 55 tral space I3, aduct I8 extends through the upper lter unit 9 with its lower end in opencommunication with the central space I3 and its upper end iixed in anipple I9 which is carried by the topl wall I4 and provides an inletconnection.

Liquid conducted to the central space I3 is forced upwardly anddownwardly through the lter units 9 andv I0 compressing the same so asto eifect a piston action similar to that obtained in the'aforementionedpatent to- H. D. Austin No. 1,934,251, the filtered lubricant iiowingout into the upper and lower chambers or spaces I6 and I1.

From these upper and lower or end chambers, the filtered lubricant isconducted from the casing either through an oulet 20, or an outlet 2|The outlet is provided by a nipple similar to the nipple I9 and issecured to the top wall I4, and the outlet 2I is afforded by a nipplefixed to the bottom wall I5. Obviously, only one of 20 the two outletsis used at one time, and in the present embodiment, the lower outlet 2|is closed by a removable plug 22.

Extending downwardly from the nipple providing the outlet 20 is a duct23. The lower 25 end of this duct is in open communication with thebottom'chamber or space I1 and the upper end thereof is providedVwithperforations 24 to communicate the same with the upper space orchamber I6 so that both end spaces I6 and I1 30 are connected with bothoutlets.

From the foregoing description taken in con nection with theaccompanying drawing, it will be readily apparent to those skilled inthe art,that this invention affords a filter of exceptionally compactconstruction and 'comparatively large capacity. ,l I Y What I claim`asmy invention is: 1. A lter of the character described comprising asubstantially cylindricalcasing having 40' a cylindrical'side wall andsubstantially flat end walls, spaced filter units disposed in the casingin superimposed relation with their adjacent portions spaced from eachother to define a central space and opposite ends and spaced from theend walls of the casing to deiine end spaces, an inlet tube carried byone end wall of the casing?? and extending through one of the filterunits to communicate with the central space to conduct liquid to saidcentral space for passage simultaneously through both lter units, anoutlet leading from one end space torthe exterior of the casing and aduct carried by one end wall and passing through both of said filterunits, said duct having communication at its opposite cud portions withthe end spaces whereby liquid passing through both of said lter units iscon- Vcal side Wall and substantially flat end Walls,

two lter units comprising batches of compressible loosely carded wooldisposed within said casing, screens at opposite ends of the filterunits to maintain the same spaced apart to provide a central space andspaced from the ends of the casing to afford end spaces, inlet andoutlet nip' ples carried by one end wall of the casing, a duct securedin the inlet nipple and passing through the adjacent filter unit tocommunicate with the central space to conduct liquid to said centralspace for passage simultaneously through both lter units to the endspaces, and a duct carried by the outlet nipple and passing through bothof the filter units, said duct having communication with both end spaceswhereby liquid lltered by both units is conducted thereby to l0 saidoutlet nipple.

JEROME BROWN.

